{"id":117622,"date":"2022-12-20T11:02:27","date_gmt":"2022-12-20T11:02:27","guid":{"rendered":"https:\/\/www.stellarinfo.com\/blog\/?p=117622"},"modified":"2025-06-27T06:46:29","modified_gmt":"2025-06-27T06:46:29","slug":"lanatomie-de-la-defaillance-dun-raid-et-sa-recuperation-stellar","status":"publish","type":"post","link":"https:\/\/www.stellarinfo.com\/blog\/fr\/lanatomie-de-la-defaillance-dun-raid-et-sa-recuperation-stellar\/","title":{"rendered":"<strong>L&#8217;anatomie d&#8217;une d\u00e9faillance RAID et sa r\u00e9cup\u00e9ration<\/strong>"},"content":{"rendered":"<?xml encoding=\"utf-8\" ?><?xml encoding=\"utf-8\" ?><p>Le syst&egrave;me RAID (Redundant Array of Independent Disks) a &eacute;t&eacute; d&eacute;velopp&eacute; pour r&eacute;pondre &agrave; trois d&eacute;fis cruciaux des besoins modernes en mati&egrave;re de stockage de donn&eacute;es :<\/p><ul class=\"wp-block-list\">\n<li>Capacit&eacute;<\/li>\n\n\n\n<li>Performance<\/li>\n\n\n\n<li>Tol&eacute;rance aux pannes ou redondance<\/li>\n<\/ul><figure class=\"wp-block-image size-large\"><img decoding=\"async\" class=\"apply-gradient-on-post-images\" src=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2012\/11\/The-Anatomy-of-RAID-Failure-and-its-Recovery.jpg\" alt=\"\"><\/figure><p>La technologie est devenue populaire d&egrave;s le d&eacute;but, mais davantage d&rsquo;organisations et de particuliers ont commenc&eacute; &agrave; l&rsquo;utiliser avec l&rsquo;introduction du RAID 5, un niveau de RAID, ainsi appel&eacute; et qui r&eacute;pondait parfaitement aux trois besoins du stockage moderne des donn&eacute;es. En bref, on peut dire qu&rsquo;en RAID 5, il est possible d&rsquo;utiliser un nombre illimit&eacute; de disques pour augmenter la capacit&eacute; de stockage des donn&eacute;es (premier besoin &agrave; satisfaire).<\/p><p>Vient ensuite la performance, le RAID 5 est la meilleure configuration RAID en termes de co&ucirc;t\/performance pour les r&eacute;seaux orient&eacute;s vers les transactions, avec une prise en charge de plusieurs requ&ecirc;tes de lecture\/&eacute;criture simultan&eacute;es et une capacit&eacute; d&rsquo;optimisation pour les requ&ecirc;tes importantes et s&eacute;quentielles (second besoin &agrave; satisfaire).<\/p><p>En ce qui concerne la tol&eacute;rance aux pannes, elle utilise le concept de bit de parit&eacute; distribu&eacute; sur les lecteurs de donn&eacute;es et peut tol&eacute;rer la panne lorsqu&rsquo;un seul lecteur de la matrice tombe en panne (Troisi&egrave;me besoin &agrave; satisfaire).<\/p><h2 class=\"wp-block-heading\" id=\"pourquoi-raid-5-?\"><a><\/a>Pourquoi RAID 5 ?<\/h2><p>Apr&egrave;s le RAID 5, d&rsquo;autres niveaux ont &eacute;galement &eacute;t&eacute; introduits avec des performances plus &eacute;lev&eacute;es et une capacit&eacute; de tol&eacute;rance aux pannes, mais le facteur co&ucirc;t\/performance fait que la configuration RAID 5 est la plus utilis&eacute;e pour l&rsquo;entreposage de donn&eacute;es, les sauvegardes de donn&eacute;es, l&rsquo;archivage web et les serveurs de fichiers de base. C&rsquo;est de loin le niveau de configuration RAID le plus commun&eacute;ment utilis&eacute; dans les p&eacute;riph&eacute;riques NAS d&rsquo;entreprise et les serveurs professionnels.<\/p><h2 class=\"wp-block-heading\" id=\"mais-la-question-se-pose-maintenant-de-savoir-pourquoi-plusieurs-niveaux-de-raid-ont-&eacute;t&eacute;-d&eacute;velopp&eacute;s.\"><a><\/a>Mais la question se pose maintenant de savoir pourquoi plusieurs niveaux de RAID ont &eacute;t&eacute; d&eacute;velopp&eacute;s.<\/h2><p>Les am&eacute;liorations sont toujours possibles et c&rsquo;est ce qui s&rsquo;est pass&eacute; avec le RAID 5. Ce niveau de RAID ne pouvait tol&eacute;rer que la d&eacute;faillance d&rsquo;un seul disque et &eacute;tait plus vuln&eacute;rable &agrave; la perte de donn&eacute;es.<\/p><p>Les niveaux de configuration RAID ult&eacute;rieurs &eacute;taient plus rapides et plus redondants, mais &eacute;taient trop co&ucirc;teux pour &ecirc;tre abord&eacute;s par les particuliers et les petites entreprises. Ainsi, le RAID 5 est rest&eacute; la configuration la plus utilis&eacute;e, m&ecirc;me si, &eacute;tant compos&eacute; de plusieurs composants &eacute;lectroniques, il est lui aussi d&eacute;faillant.<\/p><h2 class=\"wp-block-heading\" id=\"&nbsp;voici-les-raisons-les-plus-courantes-d&rsquo;une-panne-de-raid-:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;\">&nbsp;Voici les raisons les plus courantes d&rsquo;une panne de RAID :&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<\/h2><ul class=\"wp-block-list\">\n<li>Corruption ou d&eacute;faillance logique<\/li>\n\n\n\n<li>&Eacute;chec de la reconstruction<\/li>\n\n\n\n<li>Formatage ou suppression accidentelle\/intentionnelle<\/li>\n\n\n\n<li>D&eacute;faillance du disque dur<\/li>\n\n\n\n<li>D&eacute;faillance du contr&ocirc;leur RAID<\/li>\n\n\n\n<li>Syst&egrave;me de fichiers corrompu ou mauvais secteurs dans les disques durs<\/li>\n<\/ul><p>Et, toutes les raisons ci-dessus de d&eacute;faillances RAID conduisent &agrave; la perte de vos donn&eacute;es\/fichiers importants stock&eacute;s dans les disques durs connect&eacute;s dans la matrice.<\/p><p>Dans cette situation, il devient crucial pour vous de r&eacute;cup&eacute;rer ces pr&eacute;cieux fichiers et donn&eacute;es &agrave; partir de la matrice RAID et cela ne peut &ecirc;tre rendu possible que par un logiciel de r&eacute;cup&eacute;ration RAID. Pour r&eacute;soudre le probl&egrave;me de la r&eacute;cup&eacute;ration des donn&eacute;es &agrave; partir du RAID, Stellar propose un logiciel avanc&eacute; et riche en fonctionnalit&eacute;s, <a href=\"https:\/\/www.stellarinfo.com\/fr\/recuperer-donnees\/windows-recuperation-raid.php\"><strong>Stellar Data Recovery Technician<\/strong><\/a>.<\/p><div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large is-resized\"><a href=\"https:\/\/cloud.stellarinfo.com\/fr\/StellarDataRecoveryTechnician.exe?_ga=2.6888186.913478411.1670818701-307809942.1664520393\"><img loading=\"lazy\" decoding=\"async\" class=\"apply-gradient-on-post-images\" src=\"https:\/\/www.stellarinfo.com\/public\/frontEnd\/images\/article\/fr\/win.png\" alt=\"\" width=\"259\" height=\"58\"><\/a><\/figure>\n<\/div><p><strong>Vous trouverez ci-dessous les caract&eacute;ristiques uniques de ce logiciel :<\/strong><\/p><ul class=\"wp-block-list\">\n<li>Une interface utilisateur propre et facile &agrave; comprendre.<\/li>\n\n\n\n<li>Capable de r&eacute;cup&eacute;rer efficacement toutes les donn&eacute;es importantes en cas de d&eacute;faillance logique du RAID 5.<\/li>\n<\/ul><ul class=\"wp-block-list\">\n<li>R&eacute;cup&eacute;ration brute des volumes de disques durs RAID, m&ecirc;me sans la pr&eacute;sence du contr&ocirc;leur RAID.<\/li>\n\n\n\n<li>R&eacute;cup&eacute;rez les donn&eacute;es d&rsquo;un support de stockage comportant des secteurs d&eacute;fectueux en cr&eacute;ant son image.<\/li>\n\n\n\n<li>Capable de r&eacute;cup&eacute;rer des donn&eacute;es sur des disques durs RAID format&eacute;s ou re-partitionn&eacute;s.<\/li>\n\n\n\n<li>Peut r&eacute;cup&eacute;rer les donn&eacute;es d&rsquo;une matrice RAID logiquement corrompue ou inaccessible.<\/li>\n<\/ul><p>Le <strong>logiciel de r&eacute;cup&eacute;ration RAID <\/strong>de Stellar pr&eacute;sente deux caract&eacute;ristiques &eacute;tonnantes, qui sont aussi les plus importantes pour un utilisateur de RAID :<\/p><ol class=\"wp-block-list\" type=\"1\">\n<li>Vous pouvez r&eacute;cup&eacute;rer les donn&eacute;es RAID m&ecirc;me si vous avez oubli&eacute;\/perdu tous les param&egrave;tres RAID tels que la taille de la bande, l&rsquo;ordre de parit&eacute;, le d&eacute;lai de parit&eacute;, etc. Il peut d&eacute;tecter automatiquement tous les param&egrave;tres lorsque vous s&eacute;lectionnez l&rsquo;option &ldquo;Don&rsquo;t Know&rdquo; (Ne sait pas) dans le logiciel.<\/li>\n\n\n\n<li>La construction de RAID virtuel est l&rsquo;une des fonctions les plus innovantes et uniques du logiciel qui permet aux utilisateurs de cr&eacute;er un RAID virtuel &agrave; l&rsquo;aide du logiciel et d&rsquo;effectuer une r&eacute;cup&eacute;ration brute des volumes perdus.<\/li>\n<\/ol><p>D&rsquo;autres options du logiciel, telles que la v&eacute;rification de l&rsquo;&eacute;tat du disque, la r&eacute;cup&eacute;ration de supports optiques, la r&eacute;cup&eacute;ration de disques &agrave; partir du syst&egrave;me Windows, la r&eacute;cup&eacute;ration d&rsquo;images et la r&eacute;cup&eacute;ration de photos, peuvent s&rsquo;av&eacute;rer pr&eacute;cieuses pour de nombreux utilisateurs.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Le syst&egrave;me RAID (Redundant Array of Independent Disks) a &eacute;t&eacute; d&eacute;velopp&eacute; pour&hellip; <a class=\"more-link\" href=\"https:\/\/www.stellarinfo.com\/blog\/fr\/lanatomie-de-la-defaillance-dun-raid-et-sa-recuperation-stellar\/\">Continue reading <span class=\"screen-reader-text\"><strong>L&#8217;anatomie d&#8217;une d\u00e9faillance RAID et sa r\u00e9cup\u00e9ration<\/strong><\/span><\/a><\/p>\n","protected":false},"author":71,"featured_media":117600,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[2824],"tags":[],"class_list":["post-117622","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-recuperation-des-donnees-raid","entry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>L&#039;anatomie d&#039;une d\u00e9faillance RAID et sa r\u00e9cup\u00e9ration | Stellar<\/title>\n<meta name=\"description\" content=\"Connaissez toutes les raisons des d\u00e9faillances du RAID qui conduisent \u00e0 la perte de vos donn\u00e9es\/fichiers importants. 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